diff options
Diffstat (limited to 'UefiCpuPkg/Library/MtrrLib/MtrrLib.c')
| -rw-r--r-- | UefiCpuPkg/Library/MtrrLib/MtrrLib.c | 207 |
1 files changed, 168 insertions, 39 deletions
diff --git a/UefiCpuPkg/Library/MtrrLib/MtrrLib.c b/UefiCpuPkg/Library/MtrrLib/MtrrLib.c index fca9258ed7..3cf5f1392a 100644 --- a/UefiCpuPkg/Library/MtrrLib/MtrrLib.c +++ b/UefiCpuPkg/Library/MtrrLib/MtrrLib.c @@ -1,7 +1,7 @@ /** @file
MTRR setting library
- Copyright (c) 2008 - 2010, Intel Corporation. All rights reserved.<BR>
+ Copyright (c) 2008 - 2011, Intel Corporation. All rights reserved.<BR>
This program and the accompanying materials
are licensed and made available under the terms and conditions of the BSD License
which accompanies this distribution. The full text of the license may be found at
@@ -23,7 +23,7 @@ //
// This table defines the offset, base and length of the fixed MTRRs
//
-FIXED_MTRR MtrrLibFixedMtrrTable[] = {
+CONST FIXED_MTRR mMtrrLibFixedMtrrTable[] = {
{
MTRR_LIB_IA32_MTRR_FIX64K_00000,
0,
@@ -81,6 +81,20 @@ FIXED_MTRR MtrrLibFixedMtrrTable[] = { },
};
+//
+// Lookup table used to print MTRRs
+//
+GLOBAL_REMOVE_IF_UNREFERENCED CONST CHAR8 *mMtrrMemoryCacheTypeShortName[] = {
+ "UC", // CacheUncacheable
+ "WC", // CacheWriteCombining
+ "R*", // Invalid
+ "R*", // Invalid
+ "WT", // CacheWriteThrough
+ "WP", // CacheWriteProtected
+ "WB", // CacheWriteBack
+ "R*" // Invalid
+};
+
/**
Returns the variable MTRR count for the CPU.
@@ -252,11 +266,11 @@ ProgramFixedMtrr ( ClearMask = 0;
for (MsrNum = 0; MsrNum < MTRR_NUMBER_OF_FIXED_MTRR; MsrNum++) {
- if ((*Base >= MtrrLibFixedMtrrTable[MsrNum].BaseAddress) &&
+ if ((*Base >= mMtrrLibFixedMtrrTable[MsrNum].BaseAddress) &&
(*Base <
(
- MtrrLibFixedMtrrTable[MsrNum].BaseAddress +
- (8 * MtrrLibFixedMtrrTable[MsrNum].Length)
+ mMtrrLibFixedMtrrTable[MsrNum].BaseAddress +
+ (8 * mMtrrLibFixedMtrrTable[MsrNum].Length)
)
)
) {
@@ -274,8 +288,8 @@ ProgramFixedMtrr ( for (ByteShift = 0; ByteShift < 8; ByteShift++) {
if (*Base ==
(
- MtrrLibFixedMtrrTable[MsrNum].BaseAddress +
- (ByteShift * MtrrLibFixedMtrrTable[MsrNum].Length)
+ mMtrrLibFixedMtrrTable[MsrNum].BaseAddress +
+ (ByteShift * mMtrrLibFixedMtrrTable[MsrNum].Length)
)
) {
break;
@@ -288,13 +302,13 @@ ProgramFixedMtrr ( for (
;
- ((ByteShift < 8) && (*Length >= MtrrLibFixedMtrrTable[MsrNum].Length));
+ ((ByteShift < 8) && (*Length >= mMtrrLibFixedMtrrTable[MsrNum].Length));
ByteShift++
) {
OrMask |= LShiftU64 ((UINT64) MemoryCacheType, (UINT32) (ByteShift * 8));
ClearMask |= LShiftU64 ((UINT64) 0xFF, (UINT32) (ByteShift * 8));
- *Length -= MtrrLibFixedMtrrTable[MsrNum].Length;
- *Base += MtrrLibFixedMtrrTable[MsrNum].Length;
+ *Length -= mMtrrLibFixedMtrrTable[MsrNum].Length;
+ *Base += mMtrrLibFixedMtrrTable[MsrNum].Length;
}
if (ByteShift < 8 && (*Length != 0)) {
@@ -302,8 +316,8 @@ ProgramFixedMtrr ( }
TempQword =
- (AsmReadMsr64 (MtrrLibFixedMtrrTable[MsrNum].Msr) & ~ClearMask) | OrMask;
- AsmWriteMsr64 (MtrrLibFixedMtrrTable[MsrNum].Msr, TempQword);
+ (AsmReadMsr64 (mMtrrLibFixedMtrrTable[MsrNum].Msr) & ~ClearMask) | OrMask;
+ AsmWriteMsr64 (mMtrrLibFixedMtrrTable[MsrNum].Msr, TempQword);
return RETURN_SUCCESS;
}
@@ -745,8 +759,8 @@ MtrrLibInitializeMtrrMask ( OUT UINT64 *MtrrValidAddressMask
)
{
- UINT32 RegEax;
- UINT8 PhysicalAddressBits;
+ UINT32 RegEax;
+ UINT8 PhysicalAddressBits;
AsmCpuid (0x80000000, &RegEax, NULL, NULL, NULL);
@@ -887,8 +901,11 @@ MtrrSetMemoryAttribute ( UINT32 FirmwareVariableMtrrCount;
UINT32 VariableMtrrEnd;
+ DEBUG((DEBUG_CACHE, "MtrrSetMemoryAttribute() %a:%016lx-%016lx\n", mMtrrMemoryCacheTypeShortName[Attribute], BaseAddress, Length));
+
if (!IsMtrrSupported ()) {
- return RETURN_UNSUPPORTED;
+ Status = RETURN_UNSUPPORTED;
+ goto Done;
}
FirmwareVariableMtrrCount = GetFirmwareVariableMtrrCount ();
@@ -904,14 +921,16 @@ MtrrSetMemoryAttribute ( // Check for an invalid parameter
//
if (Length == 0) {
- return RETURN_INVALID_PARAMETER;
+ Status = RETURN_INVALID_PARAMETER;
+ goto Done;
}
if (
- (BaseAddress &~MtrrValidAddressMask) != 0 ||
- (Length &~MtrrValidAddressMask) != 0
+ (BaseAddress & ~MtrrValidAddressMask) != 0 ||
+ (Length & ~MtrrValidAddressMask) != 0
) {
- return RETURN_UNSUPPORTED;
+ Status = RETURN_UNSUPPORTED;
+ goto Done;
}
//
@@ -923,7 +942,7 @@ MtrrSetMemoryAttribute ( Status = ProgramFixedMtrr (MemoryType, &BaseAddress, &Length);
PostMtrrChange (Cr4);
if (RETURN_ERROR (Status)) {
- return Status;
+ goto Done;
}
}
@@ -938,7 +957,7 @@ MtrrSetMemoryAttribute ( //
// Since memory ranges below 1MB will be overridden by the fixed MTRRs,
- // we can set the bade to 0 to save variable MTRRs.
+ // we can set the base to 0 to save variable MTRRs.
//
if (BaseAddress == BASE_1MB) {
BaseAddress = 0;
@@ -1099,8 +1118,12 @@ MtrrSetMemoryAttribute ( }
Done:
- return Status;
+ DEBUG((DEBUG_CACHE, " Status = %r\n", Status));
+ if (!RETURN_ERROR (Status)) {
+ MtrrDebugPrintAllMtrrs ();
+ }
+ return Status;
}
@@ -1154,16 +1177,16 @@ MtrrGetMemoryAttribute ( // Go through the fixed MTRR
//
for (Index = 0; Index < MTRR_NUMBER_OF_FIXED_MTRR; Index++) {
- if (Address >= MtrrLibFixedMtrrTable[Index].BaseAddress &&
+ if (Address >= mMtrrLibFixedMtrrTable[Index].BaseAddress &&
Address < (
- MtrrLibFixedMtrrTable[Index].BaseAddress +
- (MtrrLibFixedMtrrTable[Index].Length * 8)
+ mMtrrLibFixedMtrrTable[Index].BaseAddress +
+ (mMtrrLibFixedMtrrTable[Index].Length * 8)
)
) {
SubIndex =
- ((UINTN)Address - MtrrLibFixedMtrrTable[Index].BaseAddress) /
- MtrrLibFixedMtrrTable[Index].Length;
- TempQword = AsmReadMsr64 (MtrrLibFixedMtrrTable[Index].Msr);
+ ((UINTN)Address - mMtrrLibFixedMtrrTable[Index].BaseAddress) /
+ mMtrrLibFixedMtrrTable[Index].Length;
+ TempQword = AsmReadMsr64 (mMtrrLibFixedMtrrTable[Index].Msr);
MtrrType = RShiftU64 (TempQword, SubIndex * 8) & 0xFF;
return GetMemoryCacheTypeFromMtrrType (MtrrType);
}
@@ -1312,7 +1335,7 @@ MtrrGetFixedMtrr ( for (Index = 0; Index < MTRR_NUMBER_OF_FIXED_MTRR; Index++) {
FixedSettings->Mtrr[Index] =
- AsmReadMsr64 (MtrrLibFixedMtrrTable[Index].Msr);
+ AsmReadMsr64 (mMtrrLibFixedMtrrTable[Index].Msr);
};
return FixedSettings;
@@ -1333,7 +1356,7 @@ MtrrSetFixedMtrrWorker ( for (Index = 0; Index < MTRR_NUMBER_OF_FIXED_MTRR; Index++) {
AsmWriteMsr64 (
- MtrrLibFixedMtrrTable[Index].Msr,
+ mMtrrLibFixedMtrrTable[Index].Msr,
FixedSettings->Mtrr[Index]
);
}
@@ -1447,7 +1470,6 @@ MtrrSetAllMtrrs ( return MtrrSetting;
}
-
/**
This function prints all MTRRs for debugging.
**/
@@ -1461,31 +1483,138 @@ MtrrDebugPrintAllMtrrs ( {
MTRR_SETTINGS MtrrSettings;
UINTN Index;
+ UINTN Index1;
UINTN VariableMtrrCount;
+ UINT64 Base;
+ UINT64 Limit;
+ UINT64 MtrrBase;
+ UINT64 MtrrLimit;
+ UINT64 RangeBase;
+ UINT64 RangeLimit;
+ UINT64 NoRangeBase;
+ UINT64 NoRangeLimit;
+ UINT32 RegEax;
+ UINTN MemoryType;
+ UINTN PreviousMemoryType;
+ BOOLEAN Found;
if (!IsMtrrSupported ()) {
return;
}
+ DEBUG((DEBUG_CACHE, "MTRR Settings\n"));
+ DEBUG((DEBUG_CACHE, "=============\n"));
+
MtrrGetAllMtrrs (&MtrrSettings);
- DEBUG((EFI_D_ERROR, "DefaultType = %016lx\n", MtrrSettings.MtrrDefType));
+ DEBUG((DEBUG_CACHE, "MTRR Default Type: %016lx\n", MtrrSettings.MtrrDefType));
for (Index = 0; Index < MTRR_NUMBER_OF_FIXED_MTRR; Index++) {
- DEBUG((
- EFI_D_ERROR, "Fixed[%02d] = %016lx\n",
- Index,
- MtrrSettings.Fixed.Mtrr[Index]
- ));
+ DEBUG((DEBUG_CACHE, "Fixed MTRR[%02d] : %016lx\n", Index, MtrrSettings.Fixed.Mtrr[Index]));
}
VariableMtrrCount = GetVariableMtrrCount ();
for (Index = 0; Index < VariableMtrrCount; Index++) {
- DEBUG((
- EFI_D_ERROR, "Variable[%02d] = %016lx, %016lx\n",
+ DEBUG((DEBUG_CACHE, "Variable MTRR[%02d]: Base=%016lx Mask=%016lx\n",
Index,
MtrrSettings.Variables.Mtrr[Index].Base,
MtrrSettings.Variables.Mtrr[Index].Mask
));
}
+ DEBUG((DEBUG_CACHE, "\n"));
+ DEBUG((DEBUG_CACHE, "MTRR Ranges\n"));
+ DEBUG((DEBUG_CACHE, "====================================\n"));
+
+ Base = 0;
+ PreviousMemoryType = MTRR_CACHE_INVALID_TYPE;
+ for (Index = 0; Index < MTRR_NUMBER_OF_FIXED_MTRR; Index++) {
+ Base = mMtrrLibFixedMtrrTable[Index].BaseAddress;
+ for (Index1 = 0; Index1 < 8; Index1++) {
+ MemoryType = RShiftU64 (MtrrSettings.Fixed.Mtrr[Index], Index1 * 8) & 0xff;
+ if (MemoryType > CacheWriteBack) {
+ MemoryType = MTRR_CACHE_INVALID_TYPE;
+ }
+ if (MemoryType != PreviousMemoryType) {
+ if (PreviousMemoryType != MTRR_CACHE_INVALID_TYPE) {
+ DEBUG((DEBUG_CACHE, "%016lx\n", Base - 1));
+ }
+ PreviousMemoryType = MemoryType;
+ DEBUG((DEBUG_CACHE, "%a:%016lx-", mMtrrMemoryCacheTypeShortName[MemoryType], Base));
+ }
+ Base += mMtrrLibFixedMtrrTable[Index].Length;
+ }
+ }
+ DEBUG((DEBUG_CACHE, "%016lx\n", Base - 1));
+
+ VariableMtrrCount = GetVariableMtrrCount ();
+
+ Base = BASE_1MB;
+ PreviousMemoryType = MTRR_CACHE_INVALID_TYPE;
+ do {
+ MemoryType = MtrrGetMemoryAttribute (Base);
+ if (MemoryType > CacheWriteBack) {
+ MemoryType = MTRR_CACHE_INVALID_TYPE;
+ }
+
+ if (MemoryType != PreviousMemoryType) {
+ if (PreviousMemoryType != MTRR_CACHE_INVALID_TYPE) {
+ DEBUG((DEBUG_CACHE, "%016lx\n", Base - 1));
+ }
+ PreviousMemoryType = MemoryType;
+ DEBUG((DEBUG_CACHE, "%a:%016lx-", mMtrrMemoryCacheTypeShortName[MemoryType], Base));
+ }
+
+ RangeBase = BASE_1MB;
+ NoRangeBase = BASE_1MB;
+ Limit = BIT36 - 1;
+ AsmCpuid (0x80000000, &RegEax, NULL, NULL, NULL);
+ if (RegEax >= 0x80000008) {
+ AsmCpuid (0x80000008, &RegEax, NULL, NULL, NULL);
+ Limit = LShiftU64 (1, RegEax & 0xff) - 1;
+ }
+ RangeLimit = Limit;
+ NoRangeLimit = Limit;
+
+ for (Index = 0, Found = FALSE; Index < VariableMtrrCount; Index++) {
+ if ((MtrrSettings.Variables.Mtrr[Index].Mask & BIT11) == 0) {
+ //
+ // If mask is not valid, then do not display range
+ //
+ continue;
+ }
+ MtrrBase = (MtrrSettings.Variables.Mtrr[Index].Base & (~(SIZE_4KB - 1)));
+ MtrrLimit = MtrrBase + ((~(MtrrSettings.Variables.Mtrr[Index].Mask & (~(SIZE_4KB - 1)))) & Limit);
+
+ if (Base >= MtrrBase && Base < MtrrLimit) {
+ Found = TRUE;
+ }
+
+ if (Base >= MtrrBase && MtrrBase > RangeBase) {
+ RangeBase = MtrrBase;
+ }
+ if (Base > MtrrLimit && MtrrLimit > RangeBase) {
+ RangeBase = MtrrLimit + 1;
+ }
+ if (Base < MtrrBase && MtrrBase < RangeLimit) {
+ RangeLimit = MtrrBase - 1;
+ }
+ if (Base < MtrrLimit && MtrrLimit <= RangeLimit) {
+ RangeLimit = MtrrLimit;
+ }
+
+ if (Base > MtrrLimit && NoRangeBase < MtrrLimit) {
+ NoRangeBase = MtrrLimit + 1;
+ }
+ if (Base < MtrrBase && NoRangeLimit > MtrrBase) {
+ NoRangeLimit = MtrrBase - 1;
+ }
+ }
+
+ if (Found) {
+ Base = RangeLimit + 1;
+ } else {
+ Base = NoRangeLimit + 1;
+ }
+ } while (Found);
+ DEBUG((DEBUG_CACHE, "%016lx\n\n", Base - 1));
}
);
}
|